A Feasible and Novel Multi-Generation System Taking Advantage of Two-Stage Compressor for Luxury Hotels  

作　　者：LI Hongqiang ZHOU Saiqun HE Changjie DENG Lu LI Lu LI Shuisheng ZHANG Guoqiang 

机构地区：[1]College of Civil Engineering,Hunan University,Changsha 410082,China [2]National Center for International Research Collaboration in Building Safety and Environment(NCIRCBSE),Hunan University,Changsha 410082,China [3]Key Laboratory of Building Safety and Energy Efficiency of the Ministry of Education,Hunan University,Changsha 410082,China [4]3rd Construction Co.,Ltd of China Construction Fifth Engineering,Changsha 410004,China [5]Key Laboratory for Damage Diagnosis of Engineering Structures of Hunan Province,Hunan University,Changsha 410082,China [6]Ltd of China Construction Fifth Engineering,Changsha 410004,China

出　　处：《Journal of Thermal Science》2021年第3期817-827,共11页热科学学报（英文版）

基　　金：the project Xiangjiang Happy City—Ice World&Water Park,which is constructed by Ltd of China Construction Fifth Engineering。

摘　　要：In order to satisfy heating,cooling and domestic hot water demand and energy conversion in luxury hotels,a feasible and novel multi-generation system taking advantage of the two-stage compressor was proposed and analyzed.The feature of this novel system is that the compressing power can be reduced and domestic water can be generated at the same time by adopting two-stage compressors instead of conventional one-stage compressor with a high compressing ratio.The energy-saving mechanism and two operating modes were introduced in detail.In a further way,the thermodynamic performance was calculated by Aspen Plus so as to make a better understanding of this novel system.And the calculation results showed that,in summer and transition seasons operating mode,the system can obtain COP(Coefficient of Performance)7.3,and 60℃ domestic hot water,when evaporating temperature is 4℃;while,in winter season operating mode,the system can obtain COP 3.1,and 58℃ domestic hot water,when evaporating temperature is-24℃.Compared with the conventional independent systems,this system can achieve higher energy-efficient,higher waste heat recovery,reduce energy consumption,and meet multiple energy demands simultaneously.

关 键 词：two-stage compression building energy conversion heat recovery district energy systems energy saving multi-energy output 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]